论文信息 - Fundamental plans for toll telephone plant

Fundamental plans for toll telephone plant

The introduction of mechanical operation and general improvement in the transmission performance of the communication plant over the years permits the fundamental plans under which toll facilities are provided to be revised rather radically. The important new features and service improvements of the current plans are outlined herein.

J. J. Pilliod

[1] C. A. Dahlbom,et al. Application of Multifrequency Pulsing in Switching , 1949, Transactions of the American Institute of Electrical Engineers.

[2] N. A. Newell,et al. Signal-Frequency Signaling System for Supervision and Dialing over Long-Distance Telephone Trunks , 1951, Transactions of the American Institute of Electrical Engineers.

[3] H. S. Osborne. A General Switching Plan for Telephone Toll Service , 1930, Transactions of the American Institute of Electrical Engineers.